988157173 has 2 divisors, whose sum is σ = 988157174. Its totient is φ = 988157172.

The previous prime is 988157167. The next prime is 988157189. The reversal of 988157173 is 371751889.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 706655889 + 281501284 = 26583^2 + 16778^2 .

It is an emirp because it is prime and its reverse (371751889) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 988157173 - 2¹⁷ = 988026101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (988157153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 494078586 + 494078587.

It is an arithmetic number, because the mean of its divisors is an integer number (494078587).

Almost surely, 2^988157173 is an apocalyptic number.

It is an amenable number.

988157173 is a deficient number, since it is larger than the sum of its proper divisors (1).

988157173 is an equidigital number, since it uses as much as digits as its factorization.

988157173 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 423360, while the sum is 49.

The square root of 988157173 is about 31434.9673612046. The cubic root of 988157173 is about 996.0367040365.

The spelling of 988157173 in words is "nine hundred eighty-eight million, one hundred fifty-seven thousand, one hundred seventy-three".